update new controllers

app/controllers/blame_controller.rb

 # Controller for viewing a file's blame
-class BlameController < ApplicationController
+class BlameController < ProjectController
   include ExtractsPath
 
-  layout "project"
-
-  before_filter :project
-
   # Authorize
-  before_filter :add_project_abilities
   before_filter :authorize_read_project!
   before_filter :authorize_code_access!
   before_filter :require_non_empty_project

app/controllers/blob_controller.rb

 # Controller for viewing a file's blame
-class BlobController < ApplicationController
+class BlobController < ProjectController
   include ExtractsPath
   include Gitlab::Encode
 
-  layout "project"
-
-  before_filter :project
-
   # Authorize
-  before_filter :add_project_abilities
   before_filter :authorize_read_project!
   before_filter :authorize_code_access!
   before_filter :require_non_empty_project

app/controllers/commit_controller.rb

 # Controller for a specific Commit
 #
 # Not to be confused with CommitsController, plural.
-class CommitController < ApplicationController
-  before_filter :project
-  layout "project"
-
+class CommitController < ProjectController
   # Authorize
-  before_filter :add_project_abilities
   before_filter :authorize_read_project!
   before_filter :authorize_code_access!
   before_filter :require_non_empty_project

app/controllers/compare_controller.rb

-class CompareController < ApplicationController
-  before_filter :project
-  layout "project"
-
+class CompareController < ProjectController
   # Authorize
-  before_filter :add_project_abilities
   before_filter :authorize_read_project!
   before_filter :authorize_code_access!
   before_filter :require_non_empty_project

app/controllers/tree_controller.rb

 # Controller for viewing a repository's file structure
-class TreeController < ApplicationController
+class TreeController < ProjectController
   include ExtractsPath
 
-  layout "project"
-
-  before_filter :project
-
   # Authorize
-  before_filter :add_project_abilities
   before_filter :authorize_read_project!
   before_filter :authorize_code_access!
   before_filter :require_non_empty_project